Most of the old fish stores in Seattle's China Town carry them (or at least used to) very regularly. Of you can't find one locally, there's bound to be a vendor here on the forums that can get one in for you.
Well the best I could find was an RTCxParoon hybrid. They are a $100 a pop though, does this seem a bit expensive to anyone? I'm surprised I can't find anything about them being banned or not. Some say they are, others say they aren't. Wish I could find a definitive answer on it.